From the widget page, grab the embed code for either of the mini versions of the widget. From the embed code itself, copy everything between the quotation marks of onClick="" ie, onclick="javascript:window.open('http://www.catholictv.com/widget/viewWidget.aspx?widgetID=1&utm_source=affiliate&utm_medium=widget&utm_campaign=Verndale','ViewWidget','width=500,height=400');"
Now, to that bit of code that was copied, add void between javascript: and window.open, so it will look like this: javascript:void window.open
With that, you have the correct code snippet to add into your URL field, similar to any other address such as "http://catholictv.org"; the HTML would look like this: <a href="javascript:void window.open('http://www.catholictv.com/widget/viewWidget.aspx?widgetID=1&utm_source=affiliate&utm_medium=widget&utm_campaign=Verndale','ViewWidget','width=500,height=400');">
From the widget page, grab the embed code for the mini widget you just inserted; after the entire onclick tag there is an <img src tag - if you have another URL field for an image, highlight and copy everything between the quotation marks for src= ie, src="http://www.catholictv.com/Images/CommonImages/ctv_videowidget_wide.png"
Paste that URL into the field for an image and you now have the corresponding image for the widget.